Multicylinder oscillating steam-engine.



4 L. AFHUGGINS. MULTIGYLINDEB. OSGILLATING STEAM ENGINE.

APPLIOATION FILED DEG. 13. 1909.

992,424:- I Patent edMay 16,1911.

4 SHEETS-SHEET 1.

c Lax. 1..

gym G23? I A ww THE ncn'ms PETERS cm. wAsI-rmarou, 1:. c4

Patented May. 16. 1911 4 SHEETS-SHEET 2.

L. A. HUGGIN'S.

MULTIOYLINDER OSOILLATING STEAM ENGINE.

APPLICATION FILED DEC. 13, 1909.

, w w a. N. w

L. A. HUGGINS.

MULTIGYLINDBE OSGILLATING STEAM ENGINE.

APPLICATION I'ILBD DEC. 13, 1909. 992,424. Patented May 16,1911.

4 SHEETS-SHEET 3.

@K LbneAOe/a 51106111504,

THE NORRIS PETERS ca, wAsnmc-ra'fl, :zc.

L. A. HUGGINS.

MULTIGYLINDEIR OSGILLATING STEAM ENGINE.

APPLIOATION FILED D110. 13, 1909.

Patented May 16, 1911.

4 SHEETS-SHEET 4.

.M. W. W a a v 0 0 1n: NORRIS rs-rsns co., WASHINGTON. n. c.

UNITED STATES PATENT OFFICE.

LEROY A. HUG-GINS, 0F-CHICA$LLINOI$ A SSIGNOIR 0F ONE-HALF T0 EDGAR IGALEZIO, OF CHICAGO, ILLINOIS.

MULTICYLINDER OSCILLATING STEAM-ENGINE.

To all whom it may. concern:

Be it known that I, LEROY A. HUeeINs, a citizen of the United States,residing at Ohicago county of Cook, and State of Illinois, have inventedcertain new and useful Improvements in Multicylinder OscillatingSteam-Engines, of which the following is a specification.

My invention relates to improvements in multi-cylinder single-actingsteam engines of the oscillating type and has for its object theproduction of an engine of this character which shall be inexpensive ofconstruct-ion and efficient in operation.

A futher object of my invention is to provide a simple and effectivesteam chestand port arrangement and means for cutting off the steam toall the cylinders simultaneously.

Other objects will appear hereinafter.

I'Vith these objects in view my invention consists in the novelconstruction and arrangement of parts all as will be hereinafter fullydescribed and particularly pointed out in the appended claim.

My invention will be more readily understood by reference to theaccompanying drawings forminga part of this specification, and in which,

Figure 1 is a side elevation of my improved oscillating engine, Fig. 2is a partial vertical longitudinal section thereof, Fig. 3 is an endelevation, Fig. 4 is a partial vertical section taken on line w-m ofFig. 2, Fig. 5 is a detail section showing the construction of acylinder piston, Fig. 6 is a transverse section taken on line 'yg ofFig. 5, Fig. 7 is a detail end elevation showing a coupling attached tothe end of the engine for properly directing the flow of the supply andexhaust steam, Fig. 8 is a horizontal section of said coupling, and Fig.9 is a detail side elevation showing said coupling in connection with aT-pipe having intake and exhaust passages leading to and from the enginerespectively.

Referring now to the drawings 1 designates the engine bed member orcrank case and 2 a crank shaft journaled therein, the latter beingprovided with a plurality of cranks, as shown in Figs. 1 and 2. Thecrank case 1 is provided with a series of pockets 3 to make clearancefor the cranks of the crank shaft 2, and in said pockets a suitablelubricator is provided in order that the crank pin bearings may belubricated by splash.

Secured to the crank case 1 and conver Specification of Letters Patent.

Application filed December 13, 1909.

Patented May 16, 1911.

Serial No. 532,944.

ing therefrom are standards 4 the upper ends of which are formed intobearings which are provided with suitable caps 5, and in these bearingsa tubular steam chest 6 is journaled. The steam chest 6 extendslongitudinally and normally is stationary in its bearings but may bepartially rotated in the latter'by means to be hereinafter described.The steam chest 6 is divided into two longitudinal passages which areseparated by a diametrical partition 7 which has a substantiallyvertical disposition in said steam chest. Through one of the passages inthe steam chest 6 the supply steam to the engine is adapted to flow andthrough the other the exhaust steam. Formed in the lower side -of thesteam chest 6 and leading from the intake passages therein are a seriesof admission ports 8 which are adapted to register with intake ports 8formed in the cylinder heads, and leading into the exhaust passages ofthe steam chest 6 are a series of exhaust ports 9 which are adapted toregister with ports 9 formed in the cylinder heads.

Each cylinder 10 is suspended from the steam chest 6 and is adapted tooscillate thereon, as shown in detail in Fig. 4, a member 11 in eachcylinder head embracing the steam chest 6 which has its end secured bymeans of the screw 12. The elongated pistons 13 are adapted to operatein the cylinders 10 in the usual manner, and the piston rods 13 arenicely fitted in said pistons and secured therein by means of thethreaded end 13". Ordinary packing rings 13 are provided, as shown inFig. 2. The construction of the piston rods 13 is such that they arepeculiarly light and strong, the same being cross-shaped in crosssection, this feature being conducive to a light-running andvibrationless engine. Bearing caps 14 which embrace the crank pins ofthe crank shaft 2 are secured to the connecting rods 13 by means ofcap-screws, as shown.

As aforesaid, the steam chest 6 is normally stationary and the portstherein register with the ports in the cylinder heads in such a mannerthat the cylinders will receive a maximum amount of steam, but if it isdesired to cut off the steam the steam chest 6 is partially rotated bymeans of the downwardly extending arm 15 provided at one extremitythereof. In this manner the flow of steam to the engine is controlled.

A coupling 16 is secured to one end of the steam chest 6 by means ofcap-screws, as shown in Fig. 2, and in this coupling a diametricallongitudinally extending partition 16 is provided which registers withthe diametrical partition of the steam chest, the passages on eitherside of said partition forming extensions of the passages in the steamchest. Connected to the coupling 16 is a T-pipe 17 having exhaust andintake passages and provided with a transverse partition 18 which isadapted to register with the partition 16 when this pipe is properlysecured to the coupling 16.

It will be noted that the crank pins of the crank shaft 2 are arrangedon the quarter and that because of this construction the moving partsare perfectly balanced and a more uniform torque is produced than wouldbe the case were said pins positioned in the same plane.

\Vhile I have shown what I deem to be the preferable form of myinvention I do not wish to be limited thereto as there might be variouschanges made in the details of construction and arrangement of partsdescribed without departing from my invention, and hence I desire toavail myself of such changes and alterations as fairly fall within thespirit and scope of the appended claim.

Having described my invention what I claim as new and desire to secureby Letters Patent is:

A steam engine comprising a crank case, a crank shaft rotatably mountedin said case, upwardly extending standards secured to said case, anormally stationary adjustable tubular steam chest mounted in saidstandards at the upper ends thereof, a diametrical vertical partition insaid steam chest separating the same into admission and exhaustpassages, said steam chest being provided with admission and exhaustport-s, a plurality of cylinders open at one end and closed at theother, the closed ends or heads of said cylinders being provided withadjustable transverse bearings fitting snugly on said steam chestwhereby said cylinders have an oscillatory movement and said heads beingprovided with intake and exhaust ports adapted to register respectivelywith ports in said steam chest, elongated pistons in said cylinders,piston rods connecting said pistons and said crank shaft, said pistonsbeing hollow and said rods being provided with ends fitting snuglytherein and of cruciform cross-section, an arm fixed to one end of saidsteam chest for angularly adjusting the same to control the admission ofsteam to said cylinder, and a flexible pipe coupling secured to theother end of said steam chest and having a diametrical partition thereinregistering with the diametrical partition of said steam chest,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LEROY A. HUGGINS. W itnesses HELEN F. LILLIs, JOSHUA R. H. Po'r'rs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

